Direct measurements of propagation delay of single-flux-quantum circuits by time-to-digital converters

IEICE Electronics Express

Akira Fujimaki⁴  Kazunori Nakamiya²  Hirotaka Terai³  Nobuyuki Yoshikawa²  Yoshihito Hashimoto¹ 

[1] SRL-ISTEC;Department of Electrical and Computer Engineering, Yokohama National University;NICT;Department of Quantum Engineering, Nagoya University

关键词: SFQ circuits;    superconducting devices;    TDC;    Josephson junctions;    superconducting integrated circuits;    propagation delay;   

DOI  :  10.1587/elex.5.332

学科分类：电子、光学、磁材料

来源: Denshi Jouhou Tsuushin Gakkai

【 摘 要 】

References(9)Cited-By(2)Direct measurements of propagation delay of single-flux-quantum (SFQ) circuits were performed using SFQ double-oscillator time-to-digital converters. The propagation delay of several SFQ logic gates in our cell library named CONNECT were measured in picosecond resolution. Small discrepancy in the propagation delay of picosecond level was observed between measurement and circuit simulation results. The discrepancy is well explained assuming the parasitic inductance around shunt resistors of Josephson junctions.

【 授权许可】

Unknown